diff --git a/src/decoder.rs b/src/decoder.rs
index fea0900..a5d03db 100644
--- a/src/decoder.rs
+++ b/src/decoder.rs
@@ -193,6 +193,10 @@ mod test {
         // op codes to demonstrate the indexing operations.
         fn new_with_backbuffer(bytes: I, back_buffer: [PixelRGBA; 64]) -> Self {
             Self {
+                width: 0,
+                height: 0,
+                channels: 4,
+                colorspace: 0,
                 back_buffer,
                 prev_pixel: PixelRGBA {
                     r: 0,
@@ -209,6 +213,10 @@ mod test {
         // function, but for testing a run of pixels.
         fn new_with_previous_pixel(bytes: I, prev_pixel: PixelRGBA) -> Self {
             Self {
+                width: 0,
+                height: 0,
+                channels: 4,
+                colorspace: 0,
                 back_buffer: [PixelRGBA::zero(); 64],
                 prev_pixel,
                 bytes,
@@ -284,7 +292,7 @@ mod test {
             },
         ];
 
-        let decoder = Decoder::new(compressed.into_iter());
+        let decoder = Decoder::new_with_no_metadata(compressed.into_iter());
         let result = decoder.collect::<Vec<PixelRGBA>>();
         assert_eq!(result, expected);
     }
@@ -330,7 +338,7 @@ mod test {
             },
         ];
 
-        let decoder = Decoder::new(compressed.into_iter());
+        let decoder = Decoder::new_with_no_metadata(compressed.into_iter());
         let result: Vec<PixelRGBA> = decoder.collect();
         assert_eq!(result, expected);
     }
@@ -396,7 +404,7 @@ mod test {
             PixelRGBA::new(0, 0, 0, 255),
         ];
 
-        let decoder = Decoder::new(compressed.into_iter());
+        let decoder = Decoder::new_with_no_metadata(compressed.into_iter());
         let result: Vec<PixelRGBA> = decoder.collect();
         assert_eq!(result, expected);
     }
@@ -462,7 +470,7 @@ mod test {
             PixelRGBA::new(37, 19, 28, 255),
         ];
 
-        let decoder = Decoder::new(compressed.into_iter());
+        let decoder = Decoder::new_with_no_metadata(compressed.into_iter());
         let result: Vec<PixelRGBA> = decoder.collect();
         assert_eq!(result, expected);
     }
@@ -555,7 +563,7 @@ mod test {
             PixelRGBA::new(0xFF, 0xFF, 0xFF, 0xFF),
         ];
 
-        let mut decoder = Decoder::new(compressed.into_iter());
+        let mut decoder = Decoder::new_with_no_metadata(compressed.into_iter());
 
         let mut result = Vec::<PixelRGBA>::new();
         loop {
@@ -624,7 +632,7 @@ mod test {
             39, // run x3
             38, // final RGBA
         ];
-        let mut decoder = Decoder::new(compressed.into_iter());
+        let mut decoder = Decoder::new_with_no_metadata(compressed.into_iter());
         let mut iters = 0;
         loop {
             if let Some(pixel) = decoder.next() {